Home / 22,199.55-30,635.28-12,128.58

Finding the Fourth Proportional to 22,199.55, 30,635.28 and 12,128.58

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Solution

The fourth proportional to 22,199.55, 30,635.28 and 12,128.58 is: 16,737.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,199.55 : 30,635.28 = 12,128.58 : x
  2. Step 2: Convert to fraction form
    22,199.55/30,635.28 = 12,128.58/x
  3. Step 3: Cross multiply
    22,199.55x = 30,635.28 × 12,128.58
  4. Step 4: Simplify right side
    22,199.55x = 371,562,444.30
  5. Step 5: Solve for x
    x = 371,562,444.30/22,199.55
  6. Step 6: Final answer
    x = 16,737.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.